Well, it's not nearly as bad as Diary of the Dead. In fact, I'd call this George Romero's best zombie movie since Dawn of the Dead. That's honestly sad. Taking a minor character from the previous film and making him some sort of proto-protagonist in the middle of a familial feud that doesn't actually involve him, Survival of the Dead doesn't really work, but it's not nearly as much of a disaster as what Romero had been putting out over the previous few years.
Sarge (Alan van Sprang) leads a small unit of military officers a few weeks into the zombie apocalypse. After stealing all of the supplies from the college students of Diary of the Dead, he encounters some good ole boys in the woods who have decapitated a group of zombies, leaving their moaning heads on pikes. This is overwrought stuff, recalling the emotionally unmoored yelling predominant in Day of the Dead. Thankfully, though, it doesn't last long, the group killing all of the good ole boys and picking up Boy (Devon Bostick). This exists in comparison to the opening on Plum Island, off the coast of Delaware, where we see the exile of Patrick O'Flynn (Kenneth Welsh) by Seamus Muldoon (Richard Fitzpatrick) over the question of what to do with the recently undead: kill them or preserve them in the hope for a cure.
So, this opening points to a major issue with Romero's dealing with the undead in his work since Day of the Dead. There has been this on-again, off-again effort to make the zombies sympathetic which contrasts wildly with the glee with which Romero films the killing of the undead. It's this real whiplash between efforts to use them for pathos reasons in one scene followed immediately by something like Sarge blithely shooting a flare into a zombie, which bursts their head into flame. He then lights his cigarette with the fire before kicking him off a boat. Were we supposed to sympathize with that zombie? Or were we supposed to just clap along with the violence? Romero is trying to have his cake and eat it too.
So, the army group heads to a port where O'Flynn has set up, sending out an internet video (that the internet still works more than a month into a zombie apocalypse either shows that the internet is super resilient or that the apocalypse isn't that bad) that attracts people with promises to Plum Island which end up being a trap. There's a shootout leading to the stealing of a barge, and O'Flynn ends up on the barge, acting as guide to Plum Island for the army group. The actual meat of the film is when they reach Plum Island. This is really a western filled with Irish characters set on an island off the eastern coast of Delaware (probably the best of its class!), and it's about two families at war with each other. The business of getting Sarge and his men to the island is really just because Romero had plans on making this the first of a trilogy that were probably going to star Sarge and however many of his group survived.
The conflict between the O'Flynns and the Muldoons is decently built with this emphasis on Muldoon trying to find a way to get the zombies feeding on something other than humans to try and save them. Romero films largely outside, and he takes in the sights well. There's a nice image of a zombie girl riding a horse that looks good but ends up making no sense when Muldoon tries to get her to eat the horse. If she's been riding it for weeks, why would she suddenly start eating it? I dunno.
Anyway, it's a decently put together series of events that work a bit better in isolation than strung together. It entertains basically enough while never really coming together as a complete film. Sarge and his group are out of place in the film's actual story. The zombies may be rehabilitated idea is underdone. O'Flynn has twin daughters (Kathleen Munroe), but the existence of the second is hidden for about half the film for some reason even though the first is in the opening scenes. There's also another overarching concern over cash that is so out of place if the world has actually collapsed, Romero apparently not understanding that the value of currency would vanish in a world where the government no longer backs its fiat money with its ability to tax since, you know, it's collapsed. I mean, cash is a great MacGuffin, but it doesn't work when cash has no value. In addition, it just gets forgotten for more than half the film. It's weird.
So, it's not good. However, it's decently performed (a huge step up from Diary), it looks surprisingly good, and it has some entertaining individual moments. Romero has lost all ability to make his films about something, and his efforts here are embarrassing. Still, as a neo-Western filled with Irish characters set on an island off the eastern coast of Delaware, it's not terrible.
